1990 sentra performance help

I have a 1990 nissan sentra base model and I'am have a :banghead: hard time looking for performance parts, does anyone know of a website for parts

why waste your money? base model b13s dont perform well ever. since your asking this question im assuming your gonna stick with only bolt ons, and all the bolt ons in the world wont make your car even as fast as a civic SI.